Is he too young

Katherine
I have a bf/fiance....Lol...I think he not ready....but anyways what do y'all think is too young ....or how y'all feel about a bf younger than you....I have a bf that is 6 yes younger than me we been together for 3 years ...but I know hell do sum stupid...lol...and he is always looking at other women....n front of me ....I told him imma do it too if you can .......should I stick thru it or will it get worse...