Here's my thoughts.

You should probably forgive her.

Reason why, it was super early in the relationship. What she did wasn't right, but also didn't know you as well as she does today as a partner.

She obviously feels remorse, and regret for what she did as she is making it up im lavish gifts, and wanting you to work less. From that statement, I would assume she is the one bringing more vacon home.

So I ask you to ask yourself, why would this good looking girl, who is already stabilizing her career, still wanting to be with me, when she can jist run off into the sunset with somebody else.

I would assume it's because you guys have gotten to know each other ALOT more, and she's fallen in love ALOT more with the man you are.

I say give her the chance now. If anything happens from this point onwards, I would pull the plug immediately though.

Don't look at it as not masculine if you decide to stay together either. That shit will eat you up more inside than actually being a rational person about the whole scenario.