I think love interests or romantic interests could work, given OP's latest context.
From tvtropes.org,
Love Interest
The princess to be rescued, or the Prince Charming to sweep the heroine off her feet. Or just someone that happens to become romantically involved.
It's a Super Trope so universal, that there are too many specific examples to list. There are a few in the list below.
The list includes Girl Next Door, Girl of My Dreams, and Hello, Nurse!.
When applied to real life, I think love interest is just as flexible. A love interest is basically a person that you are romantically interested in. This could range from something small, like going on a few dates, to something big, like love and marriage.
A romantic interest is similar to a love interest, with the possible nuance that a romantic interest concerns more casual relationships.
I wasn't able to find any reputable dictionary sources, so I imagine that the definitions vary from one person's opinion to another. However, if you call these girls your love interests, I think people will get the point that you are interested in them romantically or that you pursuing them romantically to some degree as described above.
By the way, you could also say that you are interested in these girls, or into them. They mean that you have a some kind of romantic interest in them, though it suggests a casual one. I don't think it would include "loving" someone, unless it's unrequited love.
Best Answer
It seems that you can call it a door bolt, but I think it's specifically called a barrel bolt