head in the sand in love

The state of having fallen so far in love that one's head is no longer over one's heels but under them, leaving them in a position of not even being able to scrutinize the situation (head in the sand) when there are obvious signs that things are going down hill, or they aren't being treated right. Things do not have to be going wrong for one to be "head in the sand in love". It is merely a very good way of telling. Also, one whom is "head in the sand in love" will not notice any faults at all in the person of their obsession.