I'm in a relationship with someone I've been with for two years now. Lately I've been finding myself fantasize about another man. I understand that fantasizing is one thing, but I find it happening all the time. Two years is the longest relationship I've ever been in and I can't figure out if I'm lusting for something new, or just tired of the same thing over and over again causing me to want to explore more exotic things. The guy I'm with keeps talking about wanting to get married, I'm 17 and I've told him multiple times I'm not ready for a step like that. When I'm with him I feel like he is rushing me growing up. My family members tell me that they think I would be happier single. Idk, I need advise. Please help.