Initially, you may want to be leftalone with your thoughts or you may be afraid to love anyone else again. Those feelings are completely normal and even expected. Eventually, though, isolating yourself can be unhelpful to your recovery.
Accept the support of others. Sure, people may sometimes say the wrong thing, but most of them sincerely want to help. Seek companionship and be open about your feelings. When people offer to bring you a meal or spend an evening with you, accept it. Everyone needs support through difficult times.