Their relationship emerged earlier this week, when they were spotted putting on a steamy display in their swimming pool in Ibiza.
But according to new claims, Rihanna's romance with Hassan Jameel is what caused her so-called feud with former pal Naomi Campbell.
The Sun reports that the supermodel, who is thought to have dated the Saudi businessman last year, is disgruntled the singer, 29, and Hassan have fallen so hard - as she hates feeling 'second best'.
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