A source said: "Kevin has been staying over a lot but I don't think it will be long until they are living together full-time again. They have slipped back into their old relationship really easily. Kevin is excited about living with Britney again because he finds it tough being a single dad. She is thrilled because she can have her kids back and a relationship with someone she trusts."
"Britney and Kevin have come to realise they still love each other. They have been seeing a counsellor and have drawn up a list of rules so they can improve their relationship."
However, Britney's pals have warned her that K-Fed may just want to rekindle his relationship with her because he misses the lifestyle he enjoyed as her husband.
The source added to Britain's Look magazine: "When Kevin was with Britney, he spent his days golfing, going on holidays and driving the Ferrari she bought him. But Kevin maintains it's Britney not her money he cares about. He is proud of Britney and how well she is now. He thinks she is the girl he fell in love with again. He really believes they have a future together."