Take the person you love and go away for the weekend. This can be done in many different fashions.
One way to keep it budget and low-key is to disappear into your own home, turn of your phones, and spend the weekend just enjoying each others company, some fab foods and maybe some classy cocktails. Have a party just the two of you or enclose a part of your back yard and create a private little sunbathings-pot. Or, why not dress your balcony in material and hide where noone can spy you, still soaking up the sun?