Spike is an actor and he meets Buffy and her daughter at convention/concert

Couldn't find it in the famous Spike human section, but I think he is an actor on a sci-fi show and meets Buffy and her daughter at a convention (I actualy think there might be 2 like that)...I think she was married to Angel at one time, but he cheated with Cordeilia and her daughter, with Angel, is cruel to Buffy's daughter...

TIA

I think you're referring to Acting the Part by pattyanne, but the bit about Angel cheating with Cordelia and her daughter being mean to Buffy's sounds like Saving You by Pet:

http://spikeluver.com/SpuffyRealm/viewstory.php?sid=2567&warning=NC-17

http://spikeluver.com/SpuffyRealm/viewstory.php?sid=27171

Perfect! Thank you! I guess I was combining two stories-but I love them both!!!