there is this girl I know at my college, everytime she walked past me she would smile and say "hey!" She is a very friendly person. She hangs out with one of my female friends, and my female friend always teases everybody, but the girl was with my friend the other day and my friend was teasing me, When I walked away and came back the girl is teasing me about stuff and she kept doing it. I've even seen her look at me across the room. Are these for sure signs she likes me?