Boyfriend anal exploration???

So has anyone ever tried any anal-play with your S/O (particularly if that S/O is a male?) I've talked to a close gay friend about it after learning the male high stimulation spot is there.... and he said GO FOR IT: JUST DO IT! Cuz when he experienced it with his boyfriend at the time, it was just heaven for him.

But...lol.... I've also talked with my boyfriend of 3 years about it and he's never explored that..... which surprised me. Soooo I don't know if I should or shouldnt just go for it?

What're you experiences with that???

P.s. I'm in a heterosexual relationship :)