I suppose that anyway we should understand that any human needs communication and even happy days with your boyfriend can't substutute this necessity. What one should really understand is that he/she should not deprive his/her partner of some free time that can be spent outside the house. I believe that one of the reasons why people split up is that very jealousy that finally develops into distrust.

Well, I can agree only partially. What one really needs irrespective of any relations is self-actualization, whether it's work at the office or baking! If you simply dissolve in your partner, it will be the beginning of the way to nowhere because not only the partner but even you will very soon lose respect to yourself. But as for friends...I'm absolutely sure that if one gets married, he/she automatically highlights family. It's doesn't presuppose dropping all friends, of course not but still it's essential to realize what is on the first place.