a question

i stopped watching this show a long time ago but still wondering what happened between anirudh and muskaan before muskaan married rohan the first time..

He was in love with her and b4 he cud confess she declared her love for Rohan and so broke his heart...thts what they showed
It was on some party she told him and in the same party Tara also had announced without telling muskaan or ani about their marriage