Hi Asma,
Your boyfriend may not be reaching out yet because he may be worried that if he were to do so at this point in time, you will scold him for not coming to see you on Sunday evening.
Being that you lost it emotionally when he chose to stay at his friend’s pre-wedding party instead of coming to see you, he may be waiting for you to level off emotionally.
He isn’t necessarily expecting you to reach out. He is just waiting things out in the hopes that at the point that he decides to reestablish contact with you, you will no longer be so upset with him.