I don't think that any of the girl characters are in love with Waluigi, but who knows?
Rosalina doesn't love Mario she loves waluigi
Waluigi has a secret crush on Princess Daisy as shown in Mario Party 5. She also does not get along with him. Luigi is also Princess Daisy's Boyfriend and that causes part the Feud between Waluigi and Luigi.
Waluigi does not appear in Super Mario Galaxy.
Waluigi is about 30 and Wario is about 28
Rosalina wont fall in love with Wario because Mona is in love with Wario its more likely for her to fall in love with Waluigi but i don't know when.
You canβt be Waluigi in super Mario 64! Because Waluigi was not exist in 1996
You can't turn into Waluigi.
Yes they want to get married
waluigi wario is his last name
Waluigi doesn't have a son! Wait, he does. Wadaisy is his wife, so his child must be Baby Waluigi. What does Baby Waluigi look like? Tell me! Anyway, Baby Waluigi would marry baby wadaisy.
Waluigi is not in Super Mario 64 DS.