Divorce or break-ups will be easier for this Sim. When their partner asks to end relationship, Sims with commitment issues will only get a small relationship damage, and will not have a grudge over it. Asking to Just Be Friends with these Sims will also cause very little (if any) relationship damage.
Sims won't take well to receiving a gift that's worth over §200. Gifts under §200 are better received by Sims with Commitment Issues.