How to spice things up?

Hi everyone. Been with bf over a year and he is now struggling with Erectile dysfuctions during sex. I keep telling myself it's not my fault but can't help to think it. Anyway I can spice things up for him?

I've tried dressing up in all sorts, buying toys, even tried to act like his favourite porn star. I don't think it's something medical, I feel like he's gotten bored with me, he was the same with his ex apparently and I'm dreading that our sex life will become like theirs.

All suggestions welcome. I am very open minded but he doesn't like anything with his bum 😂