Bell left the party, not because his teammates disliked him, not because his abilities had declined, and not because there was any conflict within the group.
It was because every girl in the party was beautiful, and everyone misunderstood him. They assumed he had a special relationship with them, since he was the only guy in the party.
Bell and his companions really were completely innocent, but no one believed him. As a result, he became a girl-repellent, just as you might expect.
To avoid ending up alone forever and put an end to the rumors, he chose to leave the party and pursue a sweet romance.
What Bell didn't know was that every beautiful girl in the party secretly liked him...
And once they realized they liked Bell so much they couldn't stop thinking about him and couldn't get enough of him, naturally they would...