<human>: Summarize the given text in a few sentences.

I've known him from afar since 7th grade but started talking 2 1/2 months ago we're both in 12th grade. We have been 'a thing' for a couple weeks (making out/cuddling) but made it official just a few nights ago. He was my first kiss and now my first boyfriend and the thing is that I've always been avoidant of being involved with boys, if a knew a guy liked me I'd avoid him at all costs. I don't know how to act around him in a relationship-y way. Info: a. We're each other's first relationships b. He's not very affectionate (he's told me that he likes me but doesn't compliment me or say romantic things which isn't super necessary but would be appreciated. He held my hand and interlocked fingers when we were watching a show this weekend which was cute but he doesn't say much. Physically he does touch me - when making out or if I pretend to be mad he'll pull me close). I think I'm just scared of doing the wrong thing. I don't know how to go about about being a girlfriend bc he's not really emotional so I'm just kinda guessing my way through. 

So I guess have more than one question to get advice on ... 1. How can I be a good girlfriend, what should I do? 2. What should I do about him not being expressive about the way he feels a bout me? THANK YOU so much in advance for the advice! :-)
<bot>: I'm a 17 year old girl in her first relationship and have no idea how to behave with my boyfriend who isn't very emotional.