How to reply when she says I already have plans with my roommates that night

A roommate night is one of the most ordinary reasons a person declines. It is a standing commitment with people she lives with, so it usually outranks a new invitation without anything else behind it. Treat her message as information about her calendar. Do not treat it as a ranking of you against her friends.

What she is signalling is mostly about how she wants to be handled. She tells you the plan is real, which means she is not hiding anything and does not want you to debate it. Most people in this spot are checking whether the no will make things weird. If your reply stays warm and easy, the conversation keeps going. If it turns into a campaign, she learns that saying no to you costs effort.

If you have only texted a few times, keep the reply short and make the door visible without pushing. The job is to show you noticed the plan and are not disappointed enough to chase. A reply that shows interest in her night and leaves a clear next step does this well. It names what you want without asking her to fix her schedule.

If you have met already and the banter is working, you can be a little warmer and a little more playful. The reply should still avoid demanding a time. Keep the offer loose enough that she can pick a day later without feeling cornered. What these replies share is a lack of pressure. You can tell a draft fits this kind of reply if it could be read aloud without sounding like you were waiting by the phone. Leave out any mention of other plans you have, any joke at the expense of her roommates, and any question that forces her to explain herself.

After she replies, let the next move be hers unless she has left a clear opening. If she gives you a day or a window, confirm it once and let it stand. If she says something general like rain check, wait until the next day or two before raising it again, and make the second message about something new rather than repeating the same offer. Sending a second invitation within an hour of the first reads as chasing even when your intent is simple.

If the thread goes quiet for a few days, one light message is fine. Something that gives her a reason to answer without asking for a yes or no works best. If there is still nothing after that, stop. Silence after a declined plan is common and usually means the conversation ran its course, not that you did something wrong. Keeping the next message for another day rather than sending three follow-ups protects the chance of a real plan later.