I think in terms of Harry and Liam they just wanted to start fucking guys as it made them more money whereas Andy (while I'm not knocking him) just sticks to the same set ups over and over eg mutual wanking and the odd blowjob.
Liam is defo bi and wanted to explore that through his work. You can tell he loves pounding guys. I think Harry gets a kick out of it too so they have more freedom not being under Andy's wing.
