Michael Strahan was allegedly shocked when Nicole Murphy, his longtime girlfriend, announced their split. First it was claimed the former NFL star's busy schedule was to blame, but new reports suggest unfaithfulness and prenup arguments drove the couple to call of their engagement.

The couple started dating in 2007, but allegedly went on and off when the relationship became bi-coastal. TMZ says Murphy did not want to wait another second before ending things when she learned of another woman in Strahan's life, which was coincidentally around the time of his induction into the Pro Football Hall of Fame.

Murphy speculated at the beginning of July her long-time boyfriend was cheating, though the site did not confirm how she figured out it was true.

A rep told confirmed the break-up to PEOPLE last week, citing distance as the reasoning.

"They love each other very much, but with the distance and work schedule it has been hard to maintain the relationship," a rep for the couple told PEOPLE last week.

Another report suggests the couple was fighting over a pre-nuptial agreement, which Murphy did not want.

"Nicole was unwilling to sign a prenup, even though Michael has consistently been very generous to her," an insider revealed to Page Six.

The former NFL star helped his ex when she sued Troy David Stratos for $7 million in 2010, after he convinced her to invest money overseas.

 "She gave Stratos all the money from her divorce with Eddie Murphy. Michael helped her out financially, but she still wouldn't sign a prenup."

The split is shocking, considering how highly these two praise each other in interviews.

"Michael and I talk about everything, and we both love to travel, explore and laugh," Murphy revealed in 2008.

"I have a great relationship and she's a great girl," Strahan raved after getting engaged the next year. "I don't like to talk much about my private life, but I'm really happy." 

What do you think drove the couple to split? Sound off below!