Normal Bolivian Behavior

[jcabs100]

Today I got 2 paired bolivian rams from my Lfs....now I already had a female in there and well she constantly chases after the male Bolivian and leaves the other female alone at times but I constantly been watching them since I got them and it's nothing bad but I feel like the other female that I already had is stressing the male out should I be concerened territorial behavior maybe currently have 3 bolivians in a 55 gallon tank should I get more males to pair up with the lonely female so she can leave the other pair alone