Opinions? Anything helps

So Monday night I was at my friends house and we went to her grandma’s,we were snap chatting this guy I like a lot who I have been talking to for 3 and then his friend Snapchatted and said “what are you guys doing later” and I said “I don’t know she is the driver” and he’s like “well you guys should come over and hang out” so we went over there at like 10 o’clock that night and then we started playing beer pong and whatever we were having fun and then I just started thinking about my dad and his friend was fucking pissing me off. So the guy I like was outside and I went out to get my glasses from my friends car and I said can I have a kiss and he’s like “well it’s not that I don’t want to” I asked him what it was then and he didn’t answer so I’m so fucking confused because he’s kissed me before. And now ever since Monday things have been very awkward and he doesn’t Snapchat me as much as he used to and she ignores me for multiple hours on end. My cousin sent me these screenshots yesterday of his conversation with her.

And she wouldn’t answer like she was being defensive. So then when I confronted her she didn’t really say much.. I just want to know what’s going on so I know what I need to do...