THREESOME CUCK

I am 21 M …. I met one couple in one app and then we started talking they are 29 M and 29 F so that guy told me he’s cuck and wanna see his wife with someone else

So we met in a hotel we did something everything went well then they asked for second time we again did that and they told no feelings should be involved I was okay with that

But they always want something new
Her husband told me that he wanna see new things

So guys suggest me new things which I can do to her wife and he also likes it
(HIS WIFE likes soft sex not hardcore)