Princess Lover!, Nisekoi Recommendations
I recommend this because they are both forced into a relationship by their parents/guardians decision. They have a setting to it so that its not just the boring romance. it's the funny, action and serious type which I like. It reminds me of nisekoi because of all of that. The only difference is that nisekoi is about gang members and princess lover is a more of a very rich and fancy life style to it.