Most Escorts are totally normal people. They get married all the time, and that doesn't necessarily mean leaving the industry. The same can be said for all sorts of adult professions, such as porn for example. SPs are real people and have real feelings. Yes, they fall in love with people.. sometimes its a client, and sometimes its not. Anything is possible, but just like any sort of dating, definitely not a sure thing.
There are a few AF girls that have ended up with a ring on their finger, and many SPs are married with their partner having full knowledge of their profession.. but of course, you won't know about it. Life happens... people are people... sometimes it works, sometimes it doesn't... Not everyone needs monogamy.
If you think it's real, follow your heart. You only live once... but don't expect she wants to quit the job because she met you... she might, and she might not... drop the expectation at the door. Many girls don't want to get too close because 99% of the time, that's the first thing he asks her to do.. quit your job. It's probably best to decide what you are comfortable with before you take it further.