loyalty-maintenance kissing

Major lips-and-tongue action shared for an extended period by da two members of a couple while one of said starry-eyed individuals is partaking of hot-'n'-heavy hijinks with a third individual; da purpose of said lusciously-smoochy interaction is to allow da engaged-in-lovies/intimacy person to reassure his/her main squeeze dat da romantic feelings between da two of them are not affected by said "current caresses 'n' cuddles" with this new person, but dat he is merely either expressing fondness for said third party, or accommodating da feelings/desires of said "spare tire" by "giving him some sugar" to help him feel satisfied 'n' supported emotionally.

An excellent example of loyalty-maintenance kissing would be if a hot chick is engaging in vigorous reverse-cowgirl action wif a well-hung dude whom she met at a sex-party, but has her smiling adoring face tilted upwards in a "Kiss me, big boy!" pose, and her other half is tenderly cradling her head in his hands and totally engaging wif her in passionate writhing-tongues face-sucking.