Is the age gap and past stuff going to cause any future issues?

Grace

For context my Bf is 31, he has a son age 11. We met in february of this year and we’ve been together for almost 2 months now, I am 21 only been in one serious relationship of a year. He has a baby momma, a ex of 5 years (his most recent relationship) in which he almost married into. I know it’s the past but I don’t know why i find myself thinking about it all the time. He lied about his age when we first met and said he was 26, I later put 2 and 2 together and realized it was a lie and confronted him. He said he only did it because he thought i wouldn’t mess with him anymore. I can’t help to think what other little stuff he would lie about. Is the age gap impossible? Why is it the past bothers me as much as it does? Any advice ?