A healthy relationship usually encompasses a lot of things ranging from being loyal and making your "sweetheart" happy. One way to strengthen the bond of your relationship is by not only being loyal but also kissing your babe every day.
We do not kiss for the sake of it however, french kissing your better half comes with a number of benefits. Basically, it feels so great when you deep kiss him or her when you are alone in a room. Kissing will make him or her trust you to a greater extent which will, in turn, strengthen the bond.
In most instances, it is not that easy to gain the trust of your lover because of various reasons. However, with deep kissing, it is easy to gain the trust of your partner to some extent and therefore strengthening the bond.
Besides, deep kissing tells you how much your partner means to you. It's a way of expressing deep affections towards him or her.
In this case, it simply means that he or she loves you so much and nothing else. She or he will also reciprocate by loving you back and thus strengthening the bond.
It is usually recommended that you kiss him or her on a daily basis. On the same note, avoid butterfly kisses but rather embrace deep smooching.