In a relationship, fakers have a tendency to be non-communicative. They'll provide little to no substance to what's going on in their life. They'll also make excuses why they "couldn't" communicate especially when it is a little difficult to do so.
The difference between them and someone with genuine love for you is the extra effort needed to reach out when it's not so easy.
If you are happy in a relationship, you need to look for a way to keep at it. If they make you happy, don't let it go