It was ridiculous.
If Mulgrew gave up on sex too for 7 years, I wouldn't remark on the hypocrisy.
I can understand if their were no worthwhile suitors.
When it's slim pickings or nothing, nothing is understandable, but even "not her crew" there are plenty of men and women that might have been up to her standards for a first date but for her universal intent of denial.
She found a guy to have sex with, lived with him for a while, but as soon as she got her ship back, it's "come with me tot he stars... But we'll have to stop screwing, I mean I really like it when we do it, but I can't let my crew know that I'm human being with needs".
How thin are the walls on Voyager?
There was some serious tension between Kathryn and Amelia Earhart too, even if she was already fooling around with Tacklberry.