Women are buying more sex than ever before, but why?

According to a research project titled "Women Who Buy Sexual Services in the U.K.," women lack the time to maintain romantic relationships, so a quick service helps them with their physical needs.

Women who pay for sex come from all ages and backgrounds, but one thing that they have in common is the fact that none of them have a significant other.

Researchers from Lancaster University and Manchester Metropolitan University spoke to 21 escorts and are now seeking female customers to continue their study.

Lancaster University's Dr. Sarah Kingston and Manchester Metropolitan University's Dr. Natalie Hammond found that advertisement profiles of men rose from 5,246 in 2010 to 15,732 this year.

Female profiles rose from 11,056 to 28,614 over the same period, The Independent reported.

The two hope that the research will provide a much-needed insight into the women who purchase sex.

"We have made some fascinating early findings, but we still have much work to do. We are seeking to explore motivations and experiences of women who book escorts; who and where they buy sex from and to explore how physical and sexual safety is negotiated," Kingston said.