Advice ??? Please !!

Sooo I’ve been dating this guy for 3 months now .... and we finally decided to have sex but his penis is not big enough for me!!!! I really like this guy and I don’t want to loose him but I feel as though he will never be able to please me that way because of his penis size!!! Soooo what should I do leave him or just stick it out ???😒😢😢😢