We had anal for the 1st time and I've never did it before and my boyfriend has

Now he's saying he feels closer with me that I did it with him. I was super against doing it in the past but I love him and wanted to try somthing different. Why do you think he says we are closer now he's been really loving and stuff and I don't understand why? I didn't enjoy the anal sex at all it was just weird for me I couldn't get into it!