Is it gay to enjoy my gfs finger in my ass ?

Is it gay to like having my gfs finger in my ass? She licks my ass all the time rubs her finger around the hole but I never let her in always felt awkward. I only like butt stuff when she’s jerking me off or sitting on my face while I’m messing around with her butt.

The other night she decided to just pleasure me made her way down and started sucking me off. I was on my back and she was switching off between my dick my balls and my ass. As I was getting closer to cumming she was just sucking it jerking it and what I thought was just rubbing my ass all at once it felt amazing

I finally let out one big ughhh so loud the neighbors probably heard load must’ve shot 6 feet in the air. When I looked down my gf had a big smile on her face that was when feeling came back and I realized her middle finger was all the way in there

I pretended like I was mad like oh wth I told you stay out of there. But I couldn’t hide how good it was she knew it too she even came without even touching herself the front of her underwear was soaked after. i always shoot pretty far but that was a new record. Now everytime I jerk off I think of her down there suckin it with a finger in there and I’m hard as a rock(sorry for all the detail this was one of those times dick in hand) her licking my ass while milking me underneath has always been my favorite but I now think this is.

I would love for her to do it again. I would actually like her to do it all the time. I know she was the one who initiated it and I know she likes messing around with my ass too but It just feels weird to tell your gf to put a finger in your ass. Idk if this is something other guys do but if so let me know and let me know how to go about asking her to do it more without sounding weird. Thanks also if you have never done this and have the chance do not turn in down.