Rachel refers to her relationship with Paolo as the complete opposite of her relationship with Barry.
Throughout the relationship, Ross was jealous of Paolo and constantly tricked him into calling himself mean names.
Joshua comes in after his ex-wife burns all of his clothing and he needs a whole new wardrobe.
Rachel dates Russ as a rebound relationship after breaking up with Ross upon learning of a list of her pros and cons he had written up whilst trying to decide whether to date her or Julie, but the fact that she would date a man who resembles him so much - even if she hasn't noticed the aforementioned resemblances - seems to strongly imply that she is still attracted to him, and the other friends actually suggest this theory to her.
Eventually, when Rachel sees the two arguing, she finally sees the similarities between them and walks away, disturbed.
She later breaks up with Russ, who consequently becomes depressed and one day while hanging out at the coffee shop is spotted by Ross' ex-girlfriend Julie, who is likewise depressed after Ross broke up with her.
He begins crying, and doesn't stop for hours, delaying their date and making an unappealing night for Rachel. Tag appears in 7 episodes between Season 7 and Season 8.
Rachel's hires him as her assistant at Ralph Lauren and they eventually date.
Paolo would constantly buy Rachel jewellery, clothes, or shoes whilst he was in Italy.