Should I stick it in my dirty ass?

My girlfriend has been complaining about anal sex lately. She says it's not so much that she doesn't like it, because she's starting to really enjoy it, but she says it's more the odd feeling of having something shoved into your ass. Well, I was taking a shower this morning and saw the lube sitting on the counter. I decided to see what all the fuss was about so I slowly and cautiously stuck my lubed up middle finger in my ass. The odd thing was, I really liked it. I ended up jerking off while finger fucking my own ass and came so hard my legs almost gave out from under me. I don't know what to do, though. The only people I know that enjoy this are either girls or gay. I don't know if I should have enjoyed it or not and it's kinda weirding me out. I want to talk about it with my girlfriend but I don't want her to think I'm weird. On the other hand, though, I really want her to do it to me the next time she goes down on me.
Can someone please help? I don't want my girlfriend thinking I'm gay!

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