Ill give you details, and you tell me what to do

She is always making physical contact, from arm grab/squeeze, gentle punches/slap, nudges, gentle kicks, even the fingers to my sides twitch

She waves at me from a distance, the small finger wave

We always talk if we are near each other

Ive seen her staring at me, and seen her follow me with her head if im moving

She asked for my phone number

She invited me to her birthday party, (but i had to work)

Ive noticed when she talks to other guys its just talk, never physical contact

NOW FOR THE CLINCHER

SHE HAS A BOYFRIEND

to me all above is a great boost that she likes me, but then theres the boyfriend. The only thing in my mind is that she does like me but wants to really get to know me, before even thinking about breaking up her current relationship. (i know that sounds bigheaded of me)

what should i do?