You’ve probably never seen this picture:

It’s called The Circle of the Lustful: Francesca da Rimini by William Blake, 1826. Sometimes it’s called The Whirlwind of Lovers.
It shows one of Dante’s 9 circles of hell, the first of the seven deadly sins: lust.
I’m not going to lecture you on monogamy here, the point the picture makes is this: endless passion is like a never-ending storm, which, eventually, you won’t be able to control.
You’ll forever be tossed about by feelings. That’s not a good way to live your life, as Seneca noted some 2,000 years ago:
So you must not think a man has lived long because he has white hair and wrinkles: he has not lived long, just existed long. For suppose you should think that a man had had a long voyage who had been caught in a raging storm as he left harbor, and carried hither and thither and driven round and round in a circle by the rage of opposing winds? He did not have a long voyage, just a long tossing about.
I don’t think you’re unhappy in spite of having seven girlfriends. I think you’re unhappy because of it.
The less sailors are on board, the more control the captain has.
Are you the captain of your ship?