Christina Aguilera, 42, posts TOPLESS snap of her breasts being cupped by fiancé Matthew Rutler as he turns 38… after THOSE raunchy sex life comments

Christina Aguilera posted a smoldering snap Thursday of herself posing topless as her fiancé Matthew Rutler cupped her breasts from behind.

While she modeled a kinky metallic mask, her man – who met her when he was a production assistant on her 2010 movie Burlesque – was in a suit.

The blonde 42-year-old songstress was wishing a happy 38th birthday to Matthew, whom she has been engaged to since 2014.

In a heartwarming Instagram montage remembering their years together, Christina made sure to include a snap of him cradling their eight-year-old daughter Summer.

‘Happy birthday babe, love doing life with you,’ she wrote in the caption, adding a silver heart emoji for good measure.

Over the course of the video she also featured a few pictures of Matthew during his childhood and his teenage years, long before he met Christina.

Amid a smattering of red carpet shots, Christina threw in a particularly romantic snap of her and Matthew gazing into each other’s eyes on the beach.

She recently set jaws dropping as she made a series of saucy revelations about her experimental sex life during an X-rated episode of the Call Her Daddy podcast.

During the chat, the Dirrty hitmaker, 42, revealed she had had sex on a commercial flight ‘under blankets’ and ‘bent over on a soundboard’ in a music studio.

Shortly thereafter she wound up shocking host Alex Cooper by professing her penchant for a specific sex act.

Xtina started off the chat by revealing she loves performing fellatio and said it’s ‘really important to be with a partner where you can really explore.’

She said: ‘Sexuality is a very specific thing, so, like, what one guy might like, another one doesn’t’ – while adding intimacy has ‘a lot of different levels.’

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The star also detailed losing her virginity, saying: ‘It’s so funny that I gave this persona because I probably was the last person to lose my virginity.

‘It was something that was for me. I guess that’s why my messages went the way they did too because I owned it first, maybe.

‘It was later than you would think, given the girl that was doing Dirrty and all this stuff. It’s more of a funny thing looking back.’

The star said due to traveling a lot as a musician, she ‘didn’t really have time’ to date other celebrities saying: ‘My anxieties couldn’t maybe take somebody that did the exact same thing I did. I know how this goes. I’m too vulnerable.’

Christina and Matthew first started dating in 2009 when they met on the set of her movie Burlesque which starred Cher.

In 2010 she gushed about him to People. ‘Matthew is a special person. We had a really strong friendship on the movie,’ she began.

‘He’s the kind of person you could spend hours on the phone talking to and all of a sudden it’s daylight.

‘Once I filed for divorce [from Jordan Bratman], we started dating. I’m not trying to jump into anything. I just left a five-year marriage. I’m taking it slow and trying to be happy.’

She added, ‘There’s a love there, yes. I’m having fun, I’m dating and it’s something I haven’t had in a really long time.’

They went on to welcome a daughter named Summer Rain Rutler in 2014. The child is now nine. She is also mom to son Max, 15, from her marriage to Jordan Bratman.

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