I know that exact feeling. It's such a crappy feeling to feel so alone while in a relationship. I'm a gamer too and so was my ex but he thought just us being in the same room was us hanging out, even though we'd be playing different games. I'd suggest date nights but he'd complain the whole time and make me feel like crap.

I'd say have a big talk with your bf about putting more effort into the relationship and I hope he starts. It sounds like he's become comfortable and just taking advantage of the situation.

While it's nice that this guy seems interested and is trying to make an effort to impress you. Work relationships aren't always the best idea either.