I have the same question as SM......how do you know this? About the sex with other guys?
You've been together for 16 years and split a couple of times and you are trying to figure out how to make her "wild" in bed with you because you "want some of her wild side?"
Why would you have to "fight" to get her back time after time? That sounds drama-ish.
Sex isn't the "glue" that holds a relationship together and getting some of her "wild side" isn't the real issue here. I would say address the real issue or issues, and not worry about "getting some of her wild side."
How do you know what her sex life is with these other men when you are 'off again?"
If she's been with you for 16 years off and on and 4 boys, I guess I'd think more must be going on than mere flirtatiousness when she runs off -- is she bipolar? Do you know? And what does she say when you ask her straight out, why the boyfriends? And why do they get the wild side and you do not? Obviously this is kind of goofy, maybe involving escape and fantasy and stuff with you representing home and stability except when you two amp up the drama with you fighting to get her back, which she apparently likes. But with kids in the mix, it's pretty unfair of her to behave this way. What kind of image are they getting of family life? They're all going to grow up attracted to crazy drama queens, and have unhappy relationships. Anyway, good luck, no telling what she is doing all this for, also no telling why you put up with it. You sound worth more, if you're the one staying around to take care of the kids while she is out gallivanting.