Lady GaGa would love to have a threesome.

The 27-year-old singer is open to the idea of spicing things up in the bedroom with her boyfriend Taylor Kinney by inviting another woman to share their bed.

Speaking during her appearance on 'The Howard Stern Show', Gaga laughed: ''That sounds like fun!''

The 'Applause' hitmaker has been dating Taylor since meeting on the set of her video 'You and I' in July 2012, and insists she is fully committed to him.

She said: ''Here's the thing. I'm not the type of person that's having sex all the time with lots of random people.

''I don't do that. I'm in a monogamous relationship, we're having a good time, we've been together awhile.If it were to come up, it comes up.''

''To be fair, he has stuck it out with me for a very long time through drug habits and all those sorts of things. So he's a really lovely, amazing person.''

The star - who recently admitted battling an addiction to marijuana - feels ''lucky'' to be dating the 32-year-old 'Vampire Diaries' star and doesn't care about her fame.

She said: ''I'm lucky to be with someone who has a great job and he cares about his job...

''To be fair, he has stuck it out with me for a very long time through drug habits and all those sorts of things. So he's a really lovely, amazing person. And he also doesn't care about me being famous. I'm not famous to him, I'm his baby.''