<human>: I don't know where to start. We both know that we're headed down the wrong path and we want to fix it, but we don't know where to start. 

Some history: We have been dating for a little over a year and a half, 23 f & 34 m. We moved in together soon after we met. We lived together for about 4 months and then I moved out with a mutual friend. We consistently see each other every day. Neither of us are worried about infidelity. In the last year we have gone through a hell of a lot, both personally and as a couple. 

When things are good, they are great. But when things are bad, they get really ugly. We go through periods of time that we get a long and times when we don't and I've noticed that a lot of the time it has to do with our personal stresses. We have both realized it. Sometimes we are both too needy and sometimes we are both too stand offish. Oh and we run a company together, which also gets involved in our relationship. We both love each other and we want to fix things. We just don't know what is wrong or what sets us off. We both can be very moody at times and it seems to be more frequent lately. 

How do you fix something when you don't know what's broken? How do we stop ourselves from pushing each other away? Someone please help us because we don't know what to do. We just know something needs to be done.

Can you summarize the given text in a few sentences?
<bot>: We have been dating for a year and a half. Our relationship is falling apart and we don't know how to fix it? We don't even know what is causing us to push each other away. HELP?!?!