Your serotonin levels can spike after orgasms and semen from multiple males.
Have you considered you’re not depressed at all? Maybe you just don’t get fucked enough?
Maybe you just need 2 or 3 boyfriends who are consistently emptying themselves into you?
Maybe you are a badass slut goddess who Mother Nature programmed to be an epic, load conquering, vixen?
Keep getting fucked and keep feeling happy, sweetie. You belong on a throne, not crying on a couch.