Housemate situation advice

Hey!

This definitely isn’t the right place to add this but I need some advice. I’ve got two housemates, a girl and a guy. They say they’re not together nor do they like each other in that way but this entire weekend they slept in each other’s bed. Fair enough I don’t mind if they are together, what I do mind is feeling like a third wheel. If I wanted to live with a couple I would have chosen that. Im not sure how to handle this situation.

Any advice would be great please!