Boyfriend can’t afford anything

Hi everyone! My boyfriend (30) have been dating for almost 5 months now! Everything was going absolutely perfect until he seemed tensed up lately. I asked him and he seemed to brush it off. Eventually he told me that when we first met, he took out 3 loans in a matter of a month to impress me. I was very shocked he hid this from me. His loans are $4300 and he has to pay back nearly $10,000. He gets paid bi weekly and the next day he only has $110 in his account and doesn’t have any money until the pay check but then they take more than a $1000 out. He is terrified I will leave him. I offer him money and he won’t take it but lately I’ve paid for almost everything which I found weird but never said anything because I am not that type of person to say “why can’t you pay for our date?” I have a son and I feel absolutely terrible what he is going through and love him but can’t afford to not have the things my son needs. I did not know about the loans until 3 weeks ago! Any advice please?

Edit: I just wanted to thank everyone for the advice and all the red flags I somehow passed. Last night, he asked his grandfather for $4000 and he is sending him a check. His grandparents had money for him in the long run and asked if he could use it now for his loans. I had no comment on it.