Does a person's sexuality affect their attractiveness to you?

[Serious_frusting]

When i find someone to be gay/lesbian, if they are good looking my first thought is thats a shame.
I do tend to find lesbians less attractive than stright girls. If i fid out someone is lesbian it kind of puts me off of them sexually.

Now gay blokes, i aint attracted to. Or straight blokes for that matter as im straight myself. However if a straight bloke is foud out to be gay im just like eh less competition for me lol