There is no such thing as "unconditional love". Everything has a REASON. Even if you don't demand anything from your loved one you still want at least see him/her, hear his/her voice and so on and this is already a condition. If we remove all conditions completely there won't be anything left.. no love, no relationship, no desire, no emotion, no loved one..
"Unconditional love" is a subject for mental manipulations and that's it. Don't fall in that trap