Does he like me or is he just teasing me

[Cagliostro]

I'm 19yo, sort of out of the close (my older brother knows, my conservative parents don't and my close friends know).
I'm from America and I'm studying in London.

Theres this incredible attractive guy and I think he's flirting with me, but I don't know if he likes me or is just teasing me.
He's 2 years older than me at 21

I cannot overstate how attractive he is, this makes me nervous as he could have his pick of anyone.

He keeps tickling me, I hate being tickled, but he'll wrestle me down to the floor and tickle my armpits and stomach until I'm in hysterics.
I asked him to stop but he says he "loves the sound of my laughter".

It's weird I hate being tickled but I like having him touch me and sometimes I get an erection when he's on top of me.

He says I'm "cute" and have "bedroom eyes"?
I find his British accent so sexy when he says those things
What are bedroom eyes?
The other day I was just sitting there and he came up behind me and started massaging my back and it felt really good.
What does his behavior mean?

I've never been with a guy before, I dated a girl in High school and after we had sex I realized I was gay.
He has me feeling all sorts of feelings, I have sexual dreams about him, I'm confused.

What do I do?