Everyone has something in their past that can be cast in a negative light, as none of us are perfect.
Try to remember that your depression does not define who you are.
Preface your conversation with comments about having something important to discuss and you are doing so only because the person in whom you are confiding is important to you.
Taking care of oneself is priority in order to care of someone else in a relationship.
Maintain positive thoughts, consistently take medications and attend therapy sessions, keep company with others who are supportive and upbeat in order to be at your best when dating opportunities occur.
Talk to your doctor about alternative medications, if this is the case.
In any event, it is possible to display affection in other ways when the mood is not right due to depression issues.