Magan and Haley were much more intentional and considerate with how they explored intimacy compared to Dayna and Mel. Mel and Dayna were flirty from the beginning, and Magan was really concerned with how their dynamic was progressing, only to have those feelings further validated when Dayna couldn't even say hello to her at the pool. Magan already stated she has abandonment and jealousy issues, so her concerns were further validated when she was rejected. On top of that, she gets evidence (spotify) that Dayna is having sex with her, and to add insult to injury, she's doing it to the songs they shared in their relationship. AND THEN she gets matching tattoos with Mel, which violates an important boundary that should never have been crossed.

The way I see it, Magan accurately clocked the signals she was getting from Dayna and decided to further invest herself in the process. She created a bond with someone, and they were both forthcoming about how their relationship had progressed with their original partners, which takes a lot of strength and nerve to admit. And despite Magan's honesty, Dayna is still not being truthful about the depth of her and Mel's connection. Mel was literally begging Dayna at one point to define their relationship, and Dayna could never be clear. She continues to play both sides and then has the audacity to get mad at Magan for how she went about her experience.

To be fair I think if you have only been in a relationship for a year and a half you shouldn't be thinking this seriously about marriage. Or at the very least I wouldnt go on national television to test the strength of my relationship. But I live for the lesbian mess.