For the property relations of cohabitants, the provisions of the Civil Code for marriage apply, unless the parties regulate otherwise (no. 5 par. 2 Law 4356/2016). Thus, the position can be supported that there is a proportional application of no. 1400 AK. However, according to the prevailing opinion, the provisions of unjustified enrichment are applicable, even before the drawing up of the pact (no. 6 of the aforementioned law).