A lot of love bombing may have taken place in response to the person that whether it's a first boyfriend or girlfriend or a parent they withdraw love. Another theory put forward is that unrequited love also has a lot to do with sunk costs and variable reward as well so if you like someone and you've built this image of a future with them or a fantasy in which they play a role we often will also make the mistake of viewing everything they do with roads tinted classes and giving their actions more meaning than they probably deserve.