For backgrohnd: been together nearly 4 years with a 17mth old baby, he has children from a previous relationship who he has 40%custody off.
Just before Christmas I was away, just me and baby as dp had to work. He had an accident and I was in a & e with him (he's fine now). I found out, as he left social media open, that he had invite a random woman to an event and to stay over in our home. It someone he vaguely knows. They declined the invite but he had deleted all previous messages and then deleted the chat once I was home (I confess I did check) . I asked him about the event and he failed to mention inviting this woman. I confronted him and said I was disappointed. He apologised and said it wasnt how it looked and they were struggling and he was being nice, I stressed the need for honestly as it looked ropey. But forgave it as I believed him.
Fast forward to nye, find out randomly he's run up newly 7k in debt on a credit card since last year. No reason eg just spent on eating out with his kids etc and fuel and Xmas presents etc. I'm so disappointed as I've been saving for us to have new sofas, fix the car and roof and he wasted a lot of money. He says it's his problem and didn't impact me as he will pay it back and sort it. I've helped him go through statements and the spending was on just random nonsense, which tbh is more infuriating as its just so unessisary and makes me wounder what he's spent his income on. Our bills are tiny as I own the house pre our relationship and have no mortgage.
I'm starting to have concerns now... About well him tbh but I'm not sure if I'm being unreasonable.