<human>: Can you condense the text into a few key points?

Feel kinda silly but anonymity is the only way I can ask this without feeling pathetic. So I am a freshman at college and I am in a very tight knit clique of friends made up of 3 boys and 2 girls (including myself). The two of these boys, excluding me, have began dating these girls. Leaving me with the title of 'fifth wheel'. However my problem lies here, Couple A, is very respectful of me, they do not exclude me from conversations, and do not involve an offensive amount of PDA (public displays of affection). However, Couple B are constantly display PDA and often when we are relaxing in one of our rooms, will be off in a corner or on a bed, committing acts that leave the rest of us feeling very uncomfortable. At first being patient I let this slide, tossing it up to the honey moon stage and new college freedom, however I had tolerated it for a month, with no relief, and decided to call them on it when they do. I have had to do this multiple times, telling them to either spend time talking to us, and stop being visually offensive, or to go somewhere we don't have to watch, every time apologizing but continuing it next time. This has gotten to a point where I can feel them resenting me, and I can feel my resentment for them growing. I would prefer not to end the friendship with them, but I am not sure where to go from here. Do I leave the clique for others or do I what? what can I possible say that hasn't been said?
<bot>: friends stared dating other friends in our clique, constant, obscene PDA, make everyone feel uncomfortable, Tried asking them to stop, haven't, what do?