If you have to convince people to join a social network, find something else to work on.
Social networks succeed when the people in the network convince other people to join.
Or to put it another way, people in the Harvard dorm joined TheFacebook in part because Mark Zuckerberg and other people on the hall were on it.
Relevant because "dating" was one of the primary uses of the early version. Facebook has since pivoted away from that as it has grown.
The general problem with ordinary dating apps is that success means two users stop using it because they leave the market.
Tinder success is because it mostly avoids this problem. On Tinder, success doesn't necessarily remove users (though I have two friends who met on Tinder and are monogamously married).