
I think it was explained at the beginning that he does sleep around that's why when Alicia slept with him she was super confused and was like oh I guess Lancelot has the same habits as Ares. In the original story his habits change when he meets the princess. The funny thing is I guess after sleeping with Alicia once he fell in love lol.

He sleeps around but I guess with other peeps who do the same. And then the fact that Alicia was a virgin, he wanted to take responsibility for that. Idk the take of virgins and non-virgins in here but if we look at some pionts in historical times only prostitutes or someone already married before would probably sleep around (ya know that patriarchy view) so maybe the same thing here. Also to not ruin her reputation since she was indeed a virgin n u know the dude that plucked it should always take responsibility for that n what not shit cuz if he did her reputation suddenly is fixed and all better. So that's my theory on it

Ok y'all so went n re-read the beginning chapters n it doesn't say anything about him sleeping around........ Just that he is a beast in bed for the Heroine only..... Soooo.... On that note, one theory so cliche that fits is love at first sight. Ares is a serious man but trying to trap our Alicia here so he sleeps with her n hallelujah for him she's a virgin so he has more reasons to trap her. Using that fact against her when she was mentioning that it was a fling when in fact she isn't used to flings.
Or the other cliche is wine did the trick n the papapa was so amazing that he fell in love lol

Yeah, I’m really not getting what’s in it for her in this arrangement. She probably thinks he’ll still fall in love with the other princess, so it’s not like it’s for protection. Plus, she genuinely had to be convinced to agree to it, and the only thing he said is “you get bragging rights” which she kind of already has by being the favorite sister of the emperor.

OHHH OKAY I swear I was like I know he sleeps around like I swear that was a thing so glad to know I'm not crazy!! But yeah def a magic vagina thing love at first whatever you wanna call it lol but as time goes his love makes more sense cause lol who couldn't fall for Alicia she's funny and pretty and brave and a little crazy.

The confusion about all this def comes from the early chapters when MC talks to her sister about Ares and how he should become a beast at night but ONLY FOR FL so it really creates the misunderstanding that he only slept with her but obviously considering his personality you know he sleeps around and the stuff he says himself

Well the bragging rights from the emperor isn't great as he doesn't have that much power yet n if she still believes that she'll die in the future, then the arrangement kinda does work for her. Bragging rights because right after the emperor, the Duke has it best (well not if all the scumbag nobles band together). Also if she can kinda get the Duke indebted to her maybe she can avoid her future terrible death
This story confuses me. Why did the dude sleep with her in the first place? Is he the type of guy who sleeps around? If so, why does he need to be with her? If he’s not the type of guy to sleep around, why did he sleep with someone he just met?