We had a choice with Lena, Love and Lust (choke/slave) options. If you picked choke/slave it would negate the love option provided if Ian is not in love with Lena but Lena is in love with Ian. Lena loses some points from Ian if you choose the love option.
For Alison, she just needed satisfaction points to make it more clearer. Knowing her history with Milo we are sufficed to say they had a terrible relationship. Ummm, you don't say "I love you" so casually during that intimate moment, if you said it then you meant it one way or another. "I love you" is a literal boner killer if you are in a mutually casual relationship. She didn't say it once but twice. We all know that she's been crushing on Ian for some time.