Identify this shrub

My property is half an hour north of Cobourg. The flowers are very fragrant. It blooms late Spring through mid to late Summer. It is very old. Was there before I bought the place 30 years ago…

Mock orange bush

I have what I think is a mock orange – quite large deep green leaf and small white cluster bloom. My question is, it is doing great but has become very leggy and is hanging all over what is planted…