In order to complete that lifetime wish you have to have become the boyfriend/girlfriend of 10 other sims, having just been romantically linked is not good enough.
Or secondly, you can try the Awesomemod, which allows romantic relationships between teenagers and young adults/adults (probably elders too).
My advice is, if you download it, to read all of the instructions and take note that it may conflict with other mods.
It wouldn’t work at the same time as the teen marriage/pregnancy mod for me.
I found that my Sims 3 FAQ page was getting a little long and the word count a bit heavy, so I have decided to split it up into separate pages on particular subjects. I have tried to put the questions in a form of chronological order.
PLEASE NOTE I CANNOT HELP YOU WITH THE SIMS 3 ON IPHONE, ANDROID OR ANY CONSOLES, THIS IS PC ONLY.
A teenage sim has a boyfriend, she has grown up, he’s still a teen.I don’t want their relationship to degrade, what can I do?On The Sims 3, what’s this simultaneous boyfriends thing about?I’m a little miffed as to why you cannot have simultaneous partners.There’s a lifetime achievement of having had 10 boyfriends/girlfriends, but you cannot have more than one declared boyfriend/girlfriend at any one time.Sure, you can fall in love with other sims while you have a boyfriend/girlfriend, but you cannot “go steady” with them, which kind of sucks.