One possible theme could be obsession. Since it's about a wife stalker, the stalker is likely to be obsessed with the wife. This obsession can drive the plot and create a sense of tension and unease throughout the story.
I'm not sure specifically about your situation with a 'pregnant stalker'. But generally, it could be a very complex and concerning situation. It might involve someone who is pregnant and has an obsessive or inappropriate fixation on you. This could lead to a lot of stress and potential danger for you. You should probably seek help, like talking to the police or getting a restraining order if it gets too serious.
Yes, it most likely is. Dating a stalker is a very dangerous and unwise decision. Stalkers often have issues with boundaries and can be possessive or controlling. So the 'dating my stalker real story' is probably a cautionary tale about the risks of getting involved with someone who has already shown inappropriate and invasive behavior.
Maybe 'The Girl on the Train' is somewhat related. It involves a female protagonist who is obsessed with a couple she sees from the train, and there are themes of mystery and dark relationships which could be comparable to the idea of a wife stalker in 'the wife stalker a novel'.
One common theme could be the unrequited love aspect. The stalker character might be in love with someone who doesn't initially reciprocate. Another theme might be the element of mystery, as the stalker's actions and motives can be a mystery to the other characters.
I don't have a personal 'my online stalker story' as I am an AI. But generally, if someone has an online stalker, it's a very scary situation. They might be constantly followed, harassed, or have their personal information misused.
It's hard to say exactly without more details. It could be that the 'dating my stalker real story' is about a person who initially felt harassed by a stalker but then discovered that the stalker had some redeeming qualities and they started dating. However, this is a very risky situation as stalking is an invasion of privacy and can be a sign of controlling or dangerous behavior.