Good for now. Nice start. Important thing is how long it will take to tell him the truth? If it takes too long than that's bad.
If telling him the truth doesn't take too long and If we can see some romance development about them, not robot(he thinks she is)-human but human-human then this can be a masterpiece.
Recommended for now.
Edit1: and ofcourse, I hate a love triangle. If another dude/girl falls in love with one of them It will be really hard to read.
Male MC is good and female MC is not a simple girl. She is not a girl who gets emberassed and let male be dominant(This male MC can't be dominant tho) She is not useless in fact she is really useful.