Cheating in dating relationships
It can involve affection as we work together in Christ, but affection is not a necessary element.
The Bible does not talk about "dating," but it does talk about relationships.
Each of these three relationships have two common characteristics, a commitment to the responsibilities of that particular kind of relationship and a genuine care and concern for the other person in a particular kind of relationship.
Friendship and marriage have a third characteristic - affection and attraction, although the nature of the affection and attraction is different.
However, the Bible does describe three kinds of relationships with the opposite sex and gives certain characteristics of each relationship (there are others such as parent/child and sibling, but they don't clarify the issues of dating).
One kind of relationship the Bible describes is friendship.
But for most, the issue of dating involves "romantic attraction and desire." Therefore "dating" must be approached by what the Scripture says regarding romantic desire and marriage, the only relationship in which romantic desire is to be fully expressed.