The photo only goes down if you actually take someone else to your bed as you head towards the Omega-4 relay suicide mission.
Should you choose to not get into a new relationship then a special scene will play as you head into the relay.
Jack notably reacts poorly to this whole situation.
This will likely have an impact of some sort on the next game.
- You can choose to not romance anyone in Mass Effect 2 and instead go after Kelly Chambers.
This is a pretty good indicator that there is more planned with the Mass Efect 1 romance in the next game.
========================================================= 4. Male Romances ========================================================= 4.1 - Miranda Lawson ======================== A loyal agent of Cerberus, Miranda is fairly difficult to get close to.