Ariana Grande is "yearning to be loved" after her "toxic" romance with Mac Miller.

Ariana Grande

Ariana Grande

The 24-year-old pop star has raised eyebrows after she jumped into a relationship with Pete Davidson just a few days after she announced her split from the rapper last month and, now that they're believed to be engaged, friends are concerned that she and the 'Saturday Night Live' star, 24, are rushing into things because they're happy.

A source told 'Entertainment Tonight': "[Ariana was in a] bad past relationship, and now she is with someone who appreciates her and makes her laugh and just makes her feel good. In relationships, Pete is known to be the caring one and the full steam ahead guy. He is not shy about who he likes and, like with Ariana, is very public.

"The combination of a girl who is yearning to be loved and mixing it with a guy like Pete creates this intense relationship that is moving a million miles a minute.

"For both of them, this relationship is heaven compared to their past relationships and they're just clinging to that heaven and thrilled about it."

The 'No Tears Left To Cry' hitmaker came under fire last month when she called off her relationship with Mac and began parading her new romance online days later.

However, Ariana soon hit back at fans who criticised her for ending things with him and claimed at times their two-year relationship was "scary" and "hard" for her.

She wrote on social media: "How absurd that you minimize female self-respect and self-worth by saying someone should stay in a toxic relationship because he wrote an album about them, which btw [by the way] isn't the case (just Cinderella is ab [about] me). I am not a babysitter or a mother and no woman should feel that they need to be. I have cared for him and tried to support his sobriety & prayed for his balance for years (and always will of course) but shaming/blaming women for a man's inability to keep his s**t together is a very major problem. Let's please stop doing that. of course I didn't share about how hard or scary it was while it was happening but it was. I will continue to pray from the bottom of my heart that he figures it all out and that any other woman in this position does as well (sic)."