The source said to Mailonline:
'Girls throw themselves at him. It’s hard for him to constantly say, "No. Get away from me. I have a girlfriend."'Gerard and Morgan started dating in May 2014 following his split from Romanian model Madalina Ghenea, 27, the previous year. They had a brief split earlier this year and are believed to have reunited in April.
During their split, Gerard was reported to have spent a night with pop star Rita Ora in a Los Angeles hotel back in January.