It's funny to see the reactions to this story and to compare it to others in similar scenarios. Typically, when you have a character who's like "I can't choose" and the one going after her says "I don't mind if I date only you while you date multiple people", the reaction gears towards yay, harem.
But when the one going after actually doesn't want to be treated as one out of many, the reaction is the one she loves is a player, it's awful, she should go after someone better. The contrast between the two, and pushing "guilt" on the target of affection even though she is behaving in the same way in both examples, is strange. (I guess it helps that in the first scenario the protagonist is the target, in the second the protagonist is the one who fell in love).
Either way, I rather like this story. In addition to the bait-and-switch at the start, this is actually a pretty interesting take on two people with different views on love. They naturally wouldn't have a good chemistry, but are interested enough in each other to consider their options despite those being away from their comfort zone.