Any hint of incest would be enough for Liam to go off the deep end & rightly so. It would turn his stomach. If such storylines are to continue, (& we all know they will), it's vital that this sort of activity is kept secret. Even if Liam was to find out about what Sophia has done up to now, eg in the night club, he certainly wouldn't take it kindly. Sometimes it is obvious that many participants here are not married, or in a similar long-term relationship & never have been. NO, I'm not thinking of anyone in particular. Remember that L&P stated at the outset that he was going for realism, with believable characters, (including domestic routines, daily grind etc.). It's time to get back on that track, or if not, consider abandoning realism altogether & get on with the likes of Dylan & his ludicrous 'housework for sex' approach, or similar.
Why am I thinking out loud about this?......because I don't expect much from this update for those of us not pursuing an incestuous path & the 5% per day thing after 3 months presumed development has again gone beyond "frustrating." Come on Dev, give the non-incest lobby a bone, (pun intended)!