Eddie Murphy

and singer Toni Braxton are in a serious relationship, according to reports.

The two stars "are seeing each other and very into it," a source tells US Weekly.

Toni very publicly detailed her challenging love life with estranged husband Keri Lewis on WeTV's Braxton Family Values and admitted that she had begun dating.

It appears that 50-year-old Murphy has been courting the 44-year-old singer for four months now. The Tower Heist star was even spotted backstage at Braxton's Feb. 19 concert in Los Angeles.

Still, Toni's rep denies the two are romantically involved. "Toni and Eddie are just friends and have been fans of each other's work for a long time." However, a source claims "their kids have met and everything. It's getting very serious."