Is it normal for my girlfriend to do me there?

So, I'm a very open minded guy. 24 yrs old. I've been with my girlfriend for 2 years now, and I love her completely and am very comfortable with her.

Well, anyway. The other night after some anal sex (which we just started experimenting with) my girlfriend told me how much she loves it. shes used her fingers on me while giving me oral before and it was amazing. but, this time, i said how it was such a different feeling taking her up the rear, it was very close and personal and powerful.. she replied with "i'd REALLY like to know how that feels too", "can I try doing you with a strap on?". It was sort of an instinctive NO. but the the words that came out of my mouth was "sure!"

It's just I love her so much and am so comfortable with her, we can do anything together and have it be amazing.

Now, the only reason why I'm posting this is because I'd like to get peoples feedback on this subject, have u done it? wanted to? etc.

After that we had purchased a strapless strap-on. it has a g spot stimulator that goes into her and holds in the actual penis part, so no need for straps and it should be very pleasurable for both of us. also, it vibrates.

It just came in the mail yesterday, and we're going to give it a try tonight! I'm actually very excited about this, the feeling of letting my girl be in total control for a change is driving me nuts! :D

I never thought I'd be so open minded, just goes to show you how when you're in love with somebody, anything is possible, and everything is fun.

Worse comes to worse, we'll get a good laugh out of it. Although, both of us are hoping for more!