Lynsey is currently enjoying a casual relationship with Riley Costello (Rob Norbury), but the situation is complicated as the footballer's ex-fiancée Mercedes McQueen (Jennifer Metcalfe) and glamour girl Mitzeee Minniver (Rachel Shenton) are also pursuing him.
Hassan told Inside Soap: "Mercedes and Mitzeee won't be looking after Lynsey's best interests, so she's going to have to fight for Riley's love. She's going to take care of number one - and if other people get hurt in the process, then so be it.
"Lynsey really values her friendship with Mercedes and doesn't want to lose it. Mitzeee, on the other hand, is a different kind of threat. I think there's potential for one mother of a catfight between them!"
She added: "I've been working loads with Jenny, Rob and Rachel. The storyline is going to get deeper and darker, and I don't think it's heading for a happy ending. Lynsey and Riley make a really good couple, but she's never had the best of luck with men."
Hollyoaks airs weeknights at 6.30pm on Channel 4 with a first look screening at 7pm on E4.
> Hollyoaks' Karen Hassan teases Lynsey, Riley spark
> Hollyoaks' Rob Norbury: 'Mitzeee ideal for Riley'
> Hollyoaks' Karen Hassan wants feisty Lynsey scenes
> Read more Hollyoaks spoilers and news Get the Inside Soap magazine on your iPhone or iPad