I really like this MC so far. He's loyal, he's caring, he's genuinely a good person, and unlike a lot of MCs in series like this, he isn't some raging horndog who accepts any women who throws themselves at him; he actually thinks and rationalizes the situation and takes his own feelings into account as well as the woman's, and maintains a positive moral compass. I hope he stays this way.
Hopefully he'll find out sooner rather than later that his girlfriend is pretty much a scumbag not deserving of his loyalty and break things off with her. I actually liked the girlfriend in the beginning, but she constantly gets worse and worse as the story goes on. Even ignoring the fact that she's the very reason the MC is in the situation he's in in the first place, and ignoring the fact that she's a hypocrite and a possessive, paranoid bitch, lying about having a boyfriend so she can hang out with another guy pretty much cemented the fact that she's a scumbag.