Tommy Fury says his relationship with fellow "Love Island" star Molly-Mae Hague ended because of his excessive drinking, NOT cheating ... claiming all the chatter surrounding their split has been "complete and utter bollocks."
The boxer addressed his highly publicized breakup in an interview with Men's Health UK this week ... and he said even his ex-fiancée herself would confirm his struggles with alcohol torpedoed their engagement.
Tommy's half-brother explained he started reaching for the bottle after he underwent surgery to repair ligaments in his hand .