Is it wrong of me to feel insecure or sad that my current partner that I’m with had sexual relations with other females in the past?😰

Backstory: This person and I have at least been dating for a year, 7 months now but we broke things off for 6 months early in the year cause of his financial issues and family problems. But, we talked about getting back together and later on we eventually did... He told me that he was seeing other females and having sexual relations with them when we weren’t together. I’m not sure how to feel about this, maybe it’s because I was still waiting on him.. Should I ignore the fact that I still feel this way now that we’re together again? I don’t want to put the blame on him or make him feel bad for something he can’t take back..