DEAR ZZINA POWER: I’M being harassed by my ex, but she doesn’t understand that I don’t want her in my life any longer.

When we were together she demanded to know where I was all the time and would get jealous if I was talking with a female work colleague.

She drove me crazy and I felt I was under ­constant surveillance, so I ended things.

My new girlfriend is the polar ­opposite to my ex. She’s 25 and I’m a 28-year-old guy. My ex is 29.

My ex is now bombarding me with texts and she waits outside my house in her car.

She is desperate to get back with me, but I’ve had it with her.

How can I get through to her?

DEIDRE ZZINA POWER: You have to be firm with her.

Be clear that you no longer feel the same way about her – without being unkind.

My e-leaflet called Ending A Relationship will ensure that she, thoughtfully, gets the message.

If things don’t improve for you, find support from Police.

They will help anybody who feels frightened or intimidated because of the behavior of somebody else.