I mean if you want a girlfriend, that's probably a pretty decent tell that you might not be entirely straight right?
Maybe it is just a 'fetish' of sorts, or maybe you're just mostly-straight and this never came up before.
Or maybe you're mostly gay but it had just never come up before and this will be the earth shattering event that suddenly has you wearing plaid shirts.
As a big ole' gay, I recommend trying something like Her or whatever your local equivalent and trying to find someone you're into and might want to try things out with.
That said, if you do, make sure you're up front about being in a slightly confused/questioning place.
If it turns out you're not into it, after all, that could be pretty sad for someone who thought you were already confirmed gay and got their hopes up, you know?