Regarding limerence, I'm going to share a few stories I am very familiar with showing vastly different outcomes.
1. I just shared this one in the above post but my brother's W had an affair and left him. He didn't pursue, he was a good DB'er but came about it naturally. 8 years later he's still single and she's still living with OM.
2. A neighbor of mine's W left him suddenly and unexpectedly. She too had an affair although I've never been sure whether it was a PA or EA. She went out and got a tattoo that said "finally I'm free" in Latin with a butterfly, LOL! She was one of my W's enablers when W left me. 6 months later she was right back with her H and they've been together ever since (about 5 years since that happened).
3. My W had an EA that after our separation turned PA. Their limerence ran it's course in about a year and they quit dating although they still remain casual friends. She has never attempted a reconciliation, she's content to live alone and date now and then.
4. My W's best friend left her H around the same time W left me. She wasn't in an A at the time, she was just fed up with him. She did the typical WAS stuff- new clothes, lost a lot of weight, improved her hair and makeup. After they separated she started dating. She settled on a particular guy and 5 years later is still with him and is now divorced. She never tried to reconcile with her XH.
5. My mom left my dad when I was a young teen, she had gone back to work to help out the family and got caught up in new relationships and possibilities. She had an A, and eventually left. I'm not sure how much time went by, I think it was about 6 months but the A fizzled and she tried briefly to get back with my dad, but she decided she couldn't do it and started another R, then another, then another. The last one stuck and she's been with him ever since, about 40 years now.
Which of these patterns will your W follow? YOU DON'T KNOW, that's the whole point. She could be exactly like any one of these scenarios, or maybe something different than all of these. It's impossible to say.