Lydia marked the couple's milestone by posting a rather cute message and photo on Twitter.
Lydia, 21, tweeted: "Never frown because you never know who is falling in love with your smile. Love you @tomkilbey 6 months together :D"
Six months is a long time in TOWIE land, but the young lovebirds, who have talked marriage and babies, looked happy as they sported the widest smiles while lying in bed!
Lydia, who recently moved in to Tom's London pad, started dating the footballer-turned-DJ during series six of the reality show.
Tom wasn't too pleased when he found out Lydia's ex, James 'Arg' Argent, had been texting Lydia behind his back! Since then Arg has been at loggerheads with the pair.
But it seems Tom and Lydia are leaving all the hassle behind and going from strength to strength, which is an achievement for any TOWIE couple!
Are Tom and Lydia your favourite TOWIE pair? Let us know in the comments below.
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