Boy trouble

Maddy
So I've been with this guy on and off for over a year . We would talk and then stop and this summer it changed and we talked everyday and hung out a lot more than we used to but recently he's been distant I'm the one who puts in the effort to see him . He goes to college an hour away from home so I don't mind driving up there but lately he hasn't been talking to me, like I text him but no reply I feel like I'm over reacting lol but I feel like there is something going on like there is someone else but then I think he's too busy for that because of school but then I could be wrong . But then again we aren't boyfriend and girlfriend, i guess we're just partners in some way . Because we or at least I , am not going and messing around . But there is this guy who works behind were I work and my coworker who is friends with him tell me he comes into my work to see me and I found out him and I share the same birthday and my coworker is trying to set me up with him, but I feel bad because I have my other partner that I don't even know what the hell we are but it wouldn't hurt to go out with this other guy to see what it's like.. Would it ? I mean I'm not going to fuck around and sleep with him but then I don't want to feel like a hoe talking to one guy and putting in effort for him and then talking to another guy and hanging out and going out with him... Idk what to do