Cuck is most common at first when protagonist enter lesbian relationship, after a while they will use him as a dildo when they get bored of lesbian fun and want something new. That's how it works
well said! Third wheel is also an option, but only when MC join and make pseudo throuple
This is why I tend to avoid any throuple in avns. There's never equality in them and MC in many cases end like you said as a third wheel
