Long post is long.
I had to do several tests runs of this but the results are in!
I used Caleb Vatore for this as I figured his Good Vampire aspiration would make this more challenging, I even gave him the good trait. Every time though, he got sad when catching his lover cheating, until I gave him the jealous trait, then he got angry, lol. I had to stack a lot of angry buffs on him to make him mad enough, I had him drink an essence of anger then locked him in a room with my hotheaded, mean Sim and an angry painting, with the mean lot trait. I had her do mean socials on him and it took him two days to finally snap and drink uncontrollably from her, lol. He was enraged but still didn't give in until his thirst dropped into the red, I've noticed Vampires have to be very angry or more to attack sims like this. The drink uncontrollably animation is different to the drink deeply one, he was a tough nut to crack so I think traits do make a difference. He was only at friends/lovebirds status my sim and when I was done they were enemies and both friendship and romance were all red.
My thoughts on this?
Pros: The hotheaded trait was a lot of fun to play, the rile up social is fun to do, lol. Getting a sim angry opens up some interesting
socials but that was about it.
Cons: To really tank the sims relationship, you really need to have them fight otherwise it takes forever and I don't like that, also
the jealousy made him slap her when he caught her cheating which I was definitely NOT okay with, I don't want that kind of
thing in my game. Also, this took FOREVER and drove me crazy!
While I did enjoy seeing him drink from my Sim like that and some of interactions were funny, some of it made me uncomfortable and I felt kind of bad for doing this to them.
This is because I love to play romantic sims and happy families and I really dislike jealousy or cheating of any sort, my couples are always super sweet to one another, faithful and happily in love, so this was VERY different from how I usually play, quite the opposite actually.
An interesting experiment but probably not one I'll do again as I'm not really into that kind of drama, lol.