danebro, I understand your feelings very well
have you tried having a nice foreplay (at peast 5-10 mins of just cuddling, hugging, kissing) without her touching your dick so you are not already stimulated when inserting it?
also, use your fingers. it's very easy making a woman cum using your fingers and it will give you a confidence boost, either before you insert your dick or after you came and she didnt
try it out man