How to fully relax and trust my new 5 year old ball python

[sirconquistador]

- If you don't feel like reading it all just skim down to the bottom red text. -

Well, hey there everyone. I just registered despite reading numerous threads over the past 3 months, related to feeding, housing and much more. Let me start off by saying it's been well over week since I brought my new buddy home, he was given to me along with his massive custom setup by a very nice young woman who just couldn't give him the time and attention he needed. She had bought him from a local petco five years ago, when I went to meet him I instantly fell in love with him and held him for a long while, while we spoke about how gentle and beautiful he is. Now as I told her I owned a bp when I was 13 but when I turned 15 my older sister moved out and took my beloved bp. It's been a good 3 years since I owned any reptile. I have only mammals except for Kaa (my new bp), well when I was sitting with his previous owner he was being pretty chill and exploratory but I'm not sure if it was because she was there. When I finally brought him home he seemed pretty shy and just sat coiled up in his warmer hide, probably due to my dogs barking and to the fact that living here in the windy city; well my room was pretty drafty.

I let him settle for 3 whole days just monitoring the humidity and temperature, the fourth day when I came back from work around 6 p.m. I was greeted by a adventurous bp slithering back and forth flicking his tongue, and peering around at my cats and probably my rat that is about 12 feet away from his terrarium. Since his previous owner told me it had been about 3 weeks since he last ate, I figured I would thaw out a nice small rat for him. Oh yeah forgot to mention he's 3ft and 2.5 inches. Anyways long story short he was terribly shy when I picked him up that day I put him in a "feeder box" she gave me with the rat laying infront of him, he showed no interest in it and decided to try to "burrow" out of the plastic tub. Obviously he couldn't. After a 15 minutes I put him back in his terrarium since my room was pretty cold. After that day I waited 5 days again just in case I upset him a bit. Well today I held him for a while since I kept my heater on these past 3 days, it was chilly out but I get cold easily. Well I was handling him and he was being pretty relaxed and slithering about, he even coiled around my arm and began to squeeze slightly I didn't mind. Everything was cool until he began slithering up to my face, this made me a bit uncomfortable and I'm not sure why...so I just moved my arm out abit slowly until his face was out of mine, well he then decided to squirm over my shoulder and I was ok with it until he went over to my neck and began to coil/wrap around me and squeeze tightly (which I sort of think it was normal squeezing normal but since it's been a few since I held a snake I felt like it was pretty tight, mostly because I didn't expect it and it made me a bit nervous.) So I sort of panicked for a millisecond and gently but quickly moved him away back to my lap...lol. I took in a breathe since I noticed he stiffed up a bit after doing that, I know it was because of me being stupid and getting nervous for no reason at all. But after a few minutes of silence and no movement we both relaxed again. He went back to "sniffing" me and slithering over my arms, but once again began to go up my shoulder and after awhile of him lingering over my left shoulder I felt his body start to squeeze and began to wrap around m torso. Of course it made me nervous again but I tried to fight it, I mean bp are like the goldfish of the reptile kingdom, very nice and docile; don't do much. But then his face found way to my face again and his tongue kept flicking out at my nose and he began to constrict again, soooo I decided to put him back into his terrarium...I feel terrible about it.

I mean it's not so much I worried about being bit or squeezed, I just for some reason get creepedout/uncomfortable with him being close to my face. I don't know why.
I think it's rare since I'm not aggravating him or pushing him to, but I wouldn't mind him squeezing the life out of my arm or even biting it...just not the face.

So I know this is long but I thought everything I typed down was important info, maybe it wasn't...sorry. BUT TO PUT IT SHORT AND SWEET; My bp makes me nervous when he starts to get close to my face and or coil/constrict around my shoulder and neck. Why? I don't know, what can I do to fully trust my new boy and well is it normal that he keeps doing it, also why does he keep trying to meet my gaze or my nose?

All help/replys appreciated.
Oh and My name's Elliote btw, a formal HELLO from Chicago!
Y hablo español!!