Getting my wife to try a big dick again

Aglae

Male
From
Sweden
So my wife told me a story a while ago, before we met, when she and her girlfriends traveled to madrid. They all got really drunk and met some guys. Apparently they invited them ovet to their hotel and they all had sex in the same room. My wife told me that the guy she got had the biggest dick she ever experinced. The feeling of getting completely filled was amazing. The guy had a hard time to cum but he kept going all night, she told me she dozed off but everytime she woke up he still was fucking her. When she woke up in the morning she was very sore and stretched up.
Im trying to awake her interest to fuck a guy with bigger dick than me... but how do i do it? Should i try to bring up a threesome or maybe start with buying a large dildo for her to try to remember how good it feels?