Ladies my boyfriend has been talking to a girl every day for about 3 weeks or so now. They snapchat everyday. We were all coworkers at one point but now she left. Ever since she left they talk on snapchat. It has somewhat alerted me because we were at work at 5am the other day and his sc tone rang. I asked who was he texting him and without him looking at his phone he knew it was her. It made me realize that they must speak often for him to have known that. Today, his sc tone rang at 6 and i asked him who was he texting and he mentioned another girls name when in reality I knew it wasnt the girl he claimed it was. My heart is devastated atm. What do i do? Should i be doubting him?