bus9ja2dI feel the odd one out for being single, but not for being gay
This. None of my friends have any issues with me being gay and are very welcoming. At times, it feels awkward being single amongst all the married couples.
OP - In my experience, the hardest time for connecting with straight friends is during their prime dating years. That's when you're more likely to feel different/disconnected. Is it possible to do things with them outside of bars related to common interests? For example, my friends and I play video games together a lot. Or if you like sports, maybe watch a game at one of their houses. Less competition with tits at someone's house
If you have one or two people that you are closer to, it may help to pull them aside and tell them about how you are feeling. I'm sure they are unaware that you feel lonely and may try to find ways to make you feel more included.
My other recommendation would be to keep trying to expand your circle of friends. You may find gay guys that you have something more in common with, or straight guys that are more accessible. They are out there. The more people you meet, the more likely you will find people you click with.