koikatsu, "love-activity".
These days, 婚活(こんかつ) has become a popular word, reffering various arrangements and activities for finding one's partner to marry with. Because of that, 恋活 has been created as a further extension. Here, instead of finding one to build a family, this term indicates activities to find her boyfriend or his girlfriend. It can be considered as an earlier stage for a marriage, and the people involved here are natuarlly much younger and innocent.
However, while making a boyfriend /girlfriend has become a designed task, somehow is has run away from the original and fundamental meaning of 恋. Even more, one may want to argue that love and arranged activities are two different type of things, there is little sense to mix these two together.