For the dumb power of the MC and unoriginal setting, this is actually decent, much better that I hoped at first.
It starts with the usual break-up of the "b*tch" with the MC, this is usually done to empathize how pathetic the MC is, yet in this one its done correctly, they break-up for valid reasons and both seem to be able (to some extent) to understand the other person, there is no unnecessary derision or a wealthy guy to shame the MC.
Why do I waste so much time with this unimportant event? Because it shows how the author tackles the story and the overused setting and events. The author takes things seriously in a kind of dumb setting, a weird mix but it works for me. Same for the MC, he's a grown man that acts like one, he's a bit too... stoic, but that too I like well enough.
Overall, a good story so far. if it had a more original setting, word, etc. or twists it would be better.