“Not tonight, dear” was not part of her vocabulary — until now.

Amanda Gryce suffers from a rare disorder that has left her permanently sexually aroused — experiencing as many as 50 orgasms in a single day.

“The condition is called Persistent Genital Arousal Disorder and it’s something that I’ve been living with since I was about 6,” the 24-year-old said.

Just about anything can turn her on, she said, calling the condition torturous.

“Different kind of things that can trigger my PGAD are vibrations, riding in cars and riding with a loud bass. It can happen anywhere and sometimes I’ll have five back to back. It’s not pleasurable — it has become like torture,” Gryce complained.

“I can have 50 orgasms in one day and five or 10 within an hour of each other. It happens when I’m with my friends or out in public and it’s very embarrassing,” she said.

But the frisky Floridian has found new hope through medical treatment.

She found a doctor, Robert Echenberg, who was sympathetic to her plight and found a way to help her control her runaway orgasms.

“After seeing Dr. Echenberg, I found there are things which can reduce the intensity of the orgasms — even though they are still constant. I take medication to numb the areas and do exercise to try to take [my mind off of it],” she said. “Taking control over the disorder rather than it controlling me is a dream come true.”

And she’s fallen in love — though her doctors say the couple can’t have sex.

She met her new boyfriend, restaurant worker Stuart Triplett, 22, on a dating Web site seven months ago.

“It was difficult at first to come out about my disorder to Stuart. I wasn’t sure when was the right time or how he was going to react. But he’s so supportive, he completely understands and he is just my rock,” she said.

“Stuart’s really been holding me back as far as the intimacy goes — he actually has to remind me we’re not allowed to do anything.”

And Triplett has been nothing but supportive through her ordeal.

“I suppose you could say it was love at first sight with Amanda. Dealing with her symptoms at first was kind of a challenge because I didn’t quite know how to approach it the right way,” he said.

“As far as the sex ban goes, it was kind of hard to cope with, but then I realized that it’s important to her health that she doesn’t do this, so I’ve been able to abstain as well as her,” he said.

“I’ll continue to do whatever I can to support her.”

Amanda couldn’t be happier over the new developments.

“This past year has been amazing. Meeting Stuart and Dr. Echenberg, I finally feel like I’m going to have a more normal life — and eventually a positive sex life,” she gushed.