Cheated with nudes and now I’m worried I’m too boring

My SO cheated in the beginning of our relationship on Snapchat by sending videos and pictures nude back and forth with another girl who looks nothing like me & has most of her private areas pierced.

This made me insecure but we worked through things.

Couple things that still hinder..

he says his type are brown girls (he is a white man and has a child with a Hispanic woman, I am black and white) the girl on Snapchat was white (not a very pretty face) but had her nipples pierced and her genitalia. WE LOOK NOTHING ALIKE. I’m wondering why he would be getting nudes from her if she’s not his type? Not to mention I know they did a lot back and forth since her name had the 💛 next to it (means they chat a lot back and forth)

Since then he’s deleted all social media and has given my his phone code just in case I feel insecure now and then and want to check.

The other thing is..... we never send nudes back and forth so I’m wondering if I’m too boring? Idk...