MIC's Lucy returned home from a girly break in Turkey yesterday (24 June) before posting a message of love to her followers.
Lucy tweeted: "Arrived back into UK to a lot of love. Thank f*** I have Twitter otherwise I would have had no idea my boyfriend was cheating on me. Cheers."
Last night, MIC viewers saw Spencer confess during an after series special of the E4 reality show that he had two-timed Lucy.
Speaking on The End Of Season Party, Spencer said: "I have tripped up yet again. I cheated on her, pretty recently. I was in Greece.
"I'm young and living some form of dream, but unfortunately hurting people in the process, which is certainly not what I want."
Lucy also said: "I found out because I got tweeted. Some nice people out there are looking out for me."
Following their split, Lucy headed straight to Turkey with pals and was pictured relaxing without make-up.