I need advice! I've been dating this guy for about 3 1/2 months now and we see each other every week..about twice a week now. We haven't been on a date in a few weeks but it's okay since we like spending time with each other and it doesn't have to be centered around a date. But lately I've been feeling kind of off..and today when we were hanging out he was texting this other girl. I don't know what he said but it was only once or twice and he would put his phone away and pay attention to me. He says all these things to make me feel special but now I'm having doubts. I don't want to be casual anymore I want to be exclusive. How do I tell him this without making it an ultimatum? He seems to really like me but I just don't know anymore.. Advice??