I think I am in love with two people.

I've been with this guy for over a year and four months, lately it just doesn't seem like he's very interested in my attention. He's constantly picking up overtime at worl. And like most jobs, he can't be on his phone. I started talking to a friend that I've known for awhile and I noticed myself catching feelings for him. I don't know what I should do. The guy that I am with I only get to see maybe once a week, and he is always talking about getting married and things like that. I am still very young and I feel that I haven't got to experience my life yet. I love the guy I am with so very much, and I don't want to hurt him by leaving him. I don't necessarily want to leave him to jump into another relationship, I kinda just want to experience more things. Like talking to my friend, I shouldn't of caught feelings and it makes me feel like I'm not all that committed to him. What should I do, I truly need advise.