advice ?

okay , this boy named tay I've know since 3rd grade just moved back to texas . well , we were talking and he said he liked me and he wish he had never moved blah blah blah all that stuff and that he wanted to meet up . so I'm thinking it was just so we could catch up bc i have changed A LOT since 3rd grade ( I'm a freshman ) so we went to this place called Kelly's with his momma , sister , and my big brother and i . ( we were bestfriends so I was close with his family ) we caught up and all that good stuff and went and seen a movie. so after the movie he said he wanted to tell me something and i was like oh Ight wassup ? and he asked me if i wanted to go out with him .

my face :

i really like him but i didn't want to answer right away bc i was shocked , and then he had to go and he said let him know tm .

then a few hrs ago this boy I've been talking to for a while asked me to be his gf and i didn't know what to say to him .... because i really like him but i also like tay ... so idk what to do