Why are you acting like it's impossible to have romantic and/or sexual feelings for multiple people at once? I don't think anyone's arguing that Logan is Jean's true love, that would definitely be Scott, but loving Scott doesn't mean she doesn't -also- have feelings for Logan. They're just not as deep. The same way Scott loves her, but -also- continues to have feelings for Emma. Current shenanigans don't need speculation, they have spelled it out multiple times, including in interviews. It's only a certain set of fans who keep pretending the situation is more ambiguous than it actually is because they don't like it.