I have a question in game theory. Let's suppose we have two players A and B, let's say that A is a Girl, and B is a Boy. Both of them are in the same class.
Let's suppose that anyone of them can choose from two strategies : to love or like the other player(L), or reject (or not like : O).
If both players like each others, then each of them will get 4 points : 2 points for being "loved", and 2 points for starting a relationship.
If one player likes and the other rejects, the one who is "loved" will get 2 points, and the one who is rejected will lose 2 points : -2, for having his heart broken.
If both players reject (none likes the other), then nothing changes : 0 points.
Question : What is the best response for, say : Player B ? How to eliminate weakly dominated strategies in this game?
Thanks,

There is no dominated strategy because there is no strategy that has less utility across all the other player's strategies. For example, for player B, $U_B (L) = (4,-2)$ is not better or worse than $U_B (O) = (2,0)$.