What do I avoid to keep Rowan and Alexia relationship at the top? I don't mind sharing her with other characters, escpecially Greyhide and X'Za, but Andras can go to hell. I want them to rule the world together as a happy couple with lots of sexslaves.
Also, I just got Helayne and Alexia went to her own room. How/when do I get her back?
1) Keeping their relationship at top:
a) Avoid getting hard locked onto either of the NTR paths. You can dabble- but don't get locked. There could be ways later to knock Alexia off the NTR pathings- but right now they don't exist and the Kink is definitionally 'steal your partner' so it'd be very surprising if it didn't lead to that.
b) Make choices that support your other MC while playing on the other side. X'zaratl pathing and the pregnancy Arc are good for building up Rowan x Alexia's relationship. Have Alexia go to Rowan instead of a twin for help when you can (sadly there isn't much of this type of content yet- but there is some). Be supportive of Alexia in the pregnancy arc and look for ways to solve her issues.
c) Final consideration. Having too many influence points with either twin prevents you from being able to get a Rowan x Alexia sex scene. The catacombs scene. I cannot remember exactly how much influence it was- it was like 5 or something (basically 2 events). There are very few opportunities to reduce the twins influence scores on Lexi (I can only remember 1 event in the scripts) so if you wanna hit this event you gotta be careful dabbling with either twins content prior to the NTR lock as well. The influence points also can also add some rather annoying narrative flavor blurb content to the scripts outside of CGs as well- even at very, very low influence scores; so tread through that according to your tastes.
2) Helanya + Alexia
This is currently a binary path where you cannot have both gals in your room and the gals cannot settle their differences. This plot is really old (2 years +) and is going to be re-worked by
T51bwinterized after he completes working on the Liurial NPC arc. So if you want them both in the same room and happy(relatively speaking) with Rowan you need to cross your fingers / wait like me ;-).