I can.
It's really insidious because with the way it starts, it's seen mostly as something very positive. The person is going to be really aware of the other. They'll want to do things with them. It quickly spirals into more controlling behaviour, but at first it can be seen as people being so in love. It's seen as completely normal, but it's not necessarily going to take long before you start seeing some controlling behaviour, which is going to be presented as, “I'm just aware. I really want to take care of you.”
There's not necessarily a time limit before we start seeing a pattern in place. We're not talking about tomorrow, but within the few weeks of the beginning of the relationship, there are warning signs, especially when the person starts to tell you that they love you within two weeks, that they are ready to marry you within a month and a half and that they are willing to move forward with certain ways of living or are starting to ask for certain things. You can be deeply in love and you start giving money, sharing your car or having your boyfriend or girlfriend decide to move in within two months. This is where you're going to start seeing some controlling behaviour.
If you look back at what Jane Monckton Smith has developed as a timeline for homicide in a relationship, it's going to start with something pretty normal—you think you've found someone who really cares about you. Then there will be an escalation and it's going to go to the next step. The next step is to show that you care so much, but this form of caring is in fact a way of trapping someone in a web and it just spirals.