Well, some of your post was a bit "cryptic", so I'm not sure if I followed it well
I just think that you've both said too much, have hurt each other's feelings/pride a bit and that you're both now left feeling a bit insecure.
I have always said to the guys I know that if a woman ever says you're not big enough, or that you're too small, tell her that she is in fact "too big". I was letting guys know - what we women know already - that we worry about our size as much as they worry about theirs.
Is he too small or are you too big? It's the same question when you're a couple!!! And should never come up
But now it has, and you've both been "bitten". Now you're both feeling insecure.
I'd say let things cool off for a few days in the bedroom dept. and use the time to let your oh know about his good points and why you love him in general. Hopefully, he'll respond by returning compliments to you. Aso away from the bedroom, tell him that the biggest erogeonous zone is the brain and that he turns you on more than anyone.
Back in the bedroom, try to remeber what things were like when you were first together, make appreciative noises/comments and tell him how fantastic he was (though try and keep it realistic
). It's about boosting him up again so that he never feels the need to have a go at you in retaliation again.
hope you work it out.
P.S. and instead of the lame excuse that the other guy was "too big" - if you had mentioned it at all (and you shouldn't have!), you should have said that he was useless in bed because he didn't know how to use it...