Hey ive been in a relationship with my partner for 34 years,i asked to use her facebook to look on Marketplace,when i turned the internet on a message on FB popped up,what i seen made me look at it,but it was nothing to worry about,when you backspace it shows all messages & there was on from a Facebook user & says my partner deleted the message,i asked her about it but she said it was from an app for our sons school,..then after that she started taking her phone to bed at night,i asked why & she said to use the alarm on it but she has an alarm clock all ready,then came the weekend & she took to bed with her again,i asked why take it on the weekends & her reply was her phone charger was in the room,..this has never happened before,.i'm thinking she was cheating,am i right & do i have anything to worry about?