Frustrated in myself

Does anyone else struggle with riding their bigger/overweight husband/bf???

We’ve literally gotten into arguments out of hurt and disappointment bc I can’t do it. I blame myself a lot but I haven’t had problems riding in the past with less bellied partners & he’s also just a little shorter than I’m used to (not by much) so much so that we can’t even have sex on our side bc it’s a struggle...I’m not gonna tell him that tho. Obviously. It just breaks my heart to see the frustration in his eyes bc he really thinks I’m just refusing and I’m selfish in bed.

I feel terrible. Please no rude comments. Any tips or similar stories? I feel like I have failed him.