Ideas for Robin and Jeff:

Jeff begins to hang around the girls' place more and more due to his growing interest in Cheyenne. His chances with Cheyenne are beginning to seem higher when she makes it known that she's disappointed in Eric for lieing about Lori and their marriage.
Although Jeff is flirting with Cheyenne uncontrollably, he can't help but flirt with Robin, too (slut). When Cheyenne's anger toward Eric begins to dwindle and they fall in love, Jeff is forced to move on.
He remembers Robin and asks her on a date. Robin becomes excited and accepts the invitation to dinner. Robin gets all dressed up and waits for Jeff at the restaurant. Only, Jeff never shows up and Robin remains waiting. The once busy restaurant begins to slowly empty and conversations fade when it gets near closing time. A young Waiter offers Robin a free plate of crab cakes after her fourth glass of wine. she sighs and accepts the offer.
When Robin returns home, she's upset and confides in Cheyenne and Kayla. Tom is living at the house now, and can't help but over hear their conversation and Robin's sobs.
Jeff doesn't return to the house until the next week; where he receives the cold shoulder from all three girls, expsecially Robin. Jeff tries to apologize for his flakiness and promises to make it up to Robin. She wants to accept but she can feel Cheyenne shooting a glare in her direction from across the room. Robin shakes the idea from her mind and stands her ground; denying the fact that she wishes to forgive Jeff and declines the invitation to dinner.
Jeff respects her decision but doesn't cease to flirt or impress Robin. They become friends quickly and forget about the date. Jeff eventually gains enough courage to ask our Robin one last time. She is thrilled and instantly accepts.
Cheyenne is skeptical about their relationship, even though she has witnessed their close friendship over the past several months.