Need relationship help 😬

I’m needing some guidance... I’ve been in a relationship for about 2 1/2 years. I started having doubts about our relationship and have started to realize that we have nothing in common. I am currently in nursing school and my boyfriend does not support it at all. I recently just purchased a house that we have paying for 50/50. However, I met a guy a couple of months ago that was hired by my employer to work on some electrical stuff. I haven’t spoke to This guy much but I have sort of developed a crush. The guy and I have recently become friends and fb and Snapchat but still don’t talk that much but I can’t stop thinking about him. I am so confused on what to do.