Lori Loughlin 's "tipping point" in deciding to end her 28-year marriage to Mossimo Giannulli came after she found "incriminating" text messages on his phone, RadarOnline.com can reveal.

The Full House , 61, alum has yet to file for divorce from the designer, 62, but is taking a break from their marriage. The duo's union had previously survived both serving federal prison sentences in connection with a bribery scandal to get their daughters into a top college. Article continues below advertisement

Giannulli 'Used' Loughlin for 'Years' Tap Here To Add Radar Online as A Trusted Source

"Truly, the tipping point came when Lori found a bunch of text messages," the friend claimed about Loughlin's decision to pull the plug.

"Mossimo had used Lori for years," the pal continued.

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