Pop star Christina Milian has finally confessed she and rapper Lil Wayne are more than just music collaborators, insisting he is her "man crush everything".

The Dip It Low hitmaker was first rumoured to have struck up a romance with her Young Money Entertainment boss last year (14), when they attended the ESPY Awards in Los Angeles together.

At the time, Milian brushed off the dating speculation, claiming they just "make music together", but they have continued to fuel reports of a relationship by putting on a steamy performance at the American Music Awards in November (14) and enjoying nights out together on numerous occasions.

Now Milian has coyly admitted their relationship has progressed to beyond friendship.

She was quizzed about the rumours during an interview with U.S. talk show host Wendy Williams on Thursday (15Jan15), and stopped short of stating she and Wayne are a couple outright, but declared, "He's my man crush everything..."

Asked if they sleep together at night, she dodged the question by replying, "We're in the studio late at night and at the skate park..."

Her evasive comments led Williams to determine Wayne is not her "full boyfriend", prompting Milian to pull a sour face and quip, "Well, I mean, girl, don't put it out like that! I'm just saying... We have great chemistry and we have really great involvement in each others' lives."

And Milian, who is currently starring in her own family reality show, reveals she has been shy about discussing their budding relationship in public and on air, because she wants to keep some things private.

She continued, "I did want to protect that (relationship) as well... I think sometimes if you just give it all out to the world... It's sexy to have a sense of mystique..."

Milian broke off her engagement to music mogul Jas Prince in June (14), weeks before she was linked to Wayne.

She was also previously married to producer The-Dream, the father of her young daughter, Violet.

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US Magazine: Christina Milian: Lil Wayne Is My "Man Crush Everything" - Us Weekly