I'm really worried that depression is having a big impact on my relationship.

It's making me really insecure and paranoid and I have constant self-doubt and overthink everything. I've even upset my girlfriend to the point that she's suggested I take a break from the relationship to get my head in gear. That is not what I want. It's even affecting my sex drive and I worry I will lose feelings for her and she will think that even though I really like her.

So I'm just after some advice on how to deal with these thoughts as I worry they will destroy my relationship.